The Origin of the Martian Magnetic Field Appears to Be

question 14

Multiple Choice

The origin of the Martian magnetic field appears to be

• A) magnetic material deposited by impacts of iron meteorites.
• B) an electric dynamo still operating in the small Martian core.
• C) convection of molten, iron-rich lava in the Martian mantle.
• D) remnant magnetism from an earlier global magnetic field when Mars was young.

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Definitions:

Between

in the interval separating (two points, objects, or times).

Prefix

An affix placed before the stem of a word to modify its meaning, such as "un-" in "unhappy" or "pre-" in "preview."

Before

Prior to in time or order.

Dis-

A prefix indicating separation, removal, or negation.